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gracweeb gracweeb
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6 years ago
Sleep stages 3 and 4 are also called
 
  A) REM sleep.
  B) high-frequency sleep.
  C) slow-wave sleep.
  D) paradoxical sleep.
  E) rhythmic sleep.
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tyerglertyergler
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6 years ago
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gracweeb Author
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6 years ago
Thanks
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Thank you, thank you, thank you!
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2 hours ago
Smart ... Thanks!
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